Pencil



a July 26,, 19 w c. SANFORD, JR 1,868,951

PENCIL Filed Nov. 24, 1951 Qmntoc a barrel Patented July 26, 1932 UNITED STATES PATENT OFFICE WILLIAM G. SANFORD, JR., OF LA OROYA, PERU PENCIL Application filed November 24, 1931.

The invention relates to certain improvements in pencils of the renewable lead type and has for its objects to provide a device of this character consisting of two parts, mutually coacting to grip a loose lead core in proper relation for writing or marking, when the parts are moved relatively to each other in one direction and to release the lead for further adjustment, or for replacement, when 1 moved in the opposite direction.

ends being open and the exterior of the forward end being finished with a bevel or chamfer 3.

Cooperating with the casing 1 is a barrel 4 formed with a taper complementary to that 1 of the bore of the casing and having an overall length somewhat greater than that of the casing, so that, when the barrel is forced home in the casing, the coordinate taper surfaces will engage with a snug, wedging fit sufiicient to hold the barrel firmly in the casing, with the ends of the barrel projecting from the ends of the casing.

The forward end of the barrel 4 is preferably beveled or chamfered as at 5, and formed within said forward portion and extending toward the rear of the barrel to any desired distance, depending upon the length of the leads employed, is an axial bore 6 of a diameter to loosely receive a lead, or equivalent marking device, 10. Diametrically Serial No. 577,112.

transecting the bore 6 and extending from the front end of the barrel to a point beyond the rear end of the bore is a slot 7, so that, when the barrel is forced home in the shell or casing, the slotted end of the barrel is constricted to cause the walls of the bore 6 to grip the lead and hold the same securely against axial movement in the bore.

To apply or adjust the lead to the bore of the barrel, so that the end of the lead will project from the forward end of the barrel, the latter is freed from wedging engagement with the bore of the casing by tapping the rear projecting end of the barrel to cause the barrel to move forwardly in the casing for a short (1;?

distance, thereby permitting the slotted end of the barrel to expand to release the lead and permit the same to move freely in the bore of the barrel until a fresh length of the lead is projected from the end of the barrel, .1-

after which the barrel is again forced into wedging engagement with the casing and the split end of the barrel again grips and holds the lead. Obviously, the same operations are necessary to renew the lead.

By reason of the fact that the tip or forward end of the barrel is of larger diameter than the corresponding end of the casing, the latter cannot be forced out over the pencil point. i

The two-part pencil may be made of wood, metal, celluloid, or other plastic material in any size, color or character of ornamentation, and the simplicity and sturdy character of the device insures a long period of usefulness without impairment.

vVhat- I claim is:

1. A pencil, comprising a tubular casing having a rearwardly tapering bore, and a barrel having a complementary taper to form a snug fit within the bore of the casing, said barrel being longer than the casing to normally project beyond the ends thereof and having an axial bore in its larger end to loosely receive the lead and a transverse slot;

whereby the slotted end of the barrel Will be compressed to grip the lead.

2. A pencil, comprising a tubular casing having a rearwardly tapering bore, and a barrel having a complementary taper to form a snug fit Within the bore of the casing, said barrel being longer than the casing to nor mally project beyond the ends thereof having an axial bore in its larger end to loosely receive the lead and a transverse slot of greater length than the bore; whereby the slotted end of the barrel will be compressed to grip the lead.

In testimon whereof I aflix my signature.

WI LIAM C. SANFORD, JR. 

